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First I am developing an extension for custom price and I have an input on product page, this is an image describes what I've done :

enter image description here

when a customer enters the price he wants and clicks add to cart, the product must be added with that price added by him.

I know that can be coded in the controller but I don't know how?

this is the controller empty class :

<?php

class WebDirect_CustomPrice_savePriceController extends Mage_Core_Controller_Front_Action{
    //put your code here
}

anyone knows how that add to cart button works(code)

Kandarp B Patel
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Souf
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  • Please post the rest of your code, when a customer clicks add to basket what method in your controller is being called and what values do you have access too? (i.e. Custom price). It's possible to do what you want, but get the basics working first (i.e. So a product actually gets added to cart with normal price first). Once you have got that bit working look at this post where I have explained how to do this before: http://stackoverflow.com/questions/20949796/can-we-add-more-than-one-special-price-in-magento-using-price-type-attribute/20961884#comment31595731_20961884 – Ashley Swatton Mar 25 '14 at 11:20
  • Also, I would try doing this with an observer maybe instead of a whole new custom controller and changing a lot of magento default behaviour. Think of future upgrades :-) – Ashley Swatton Mar 25 '14 at 11:21
  • @AshleySwatton if that so how to do that with observer ? the extension doesn't modify the core and that's what i want ? – Souf Mar 25 '14 at 11:55

2 Answers2

6

You need to call final_price observer for it. Need to follow bellow steps:

1 add Observer in etc/config.xml

<events>
  <catalog_product_get_final_price>
    <observers>
      <xyz_catalog_price_observer>
        <type>singleton</type>
        <class>Xyz_Catalog_Model_Price_Observer</class>
        <method>apply_customprice</method>
      </xyz_catalog_price_observer>
    </observers>
  </catalog_product_get_final_price>     
</events>

  1. Add method in you model apply_customprice()

     public function apply_customprice($observer)
 {
     $event = $observer->getEvent();
     $product = $event->getProduct();
 // ADDD LOGIC HERE to get price added by customer
    $product->setFinalPrice($specialPrice); // set the product final price
    return $this;
 }

Click on below like where you can find how to set custom price when product added in cart.

http://www.magentocommerce.com/wiki/5_-_modules_and_development/0_-_module_development_in_magento/customizing_magento_using_event-observer_method

Kandarp B Patel
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  • by the way Xyz is what namespace or module name? – Souf Mar 25 '14 at 15:09
  • the price changed but i don't wanna draw regular price – Souf Mar 25 '14 at 15:25
  • i've tried this one first http://magentotutorial.org/programmatically-add-product-cart-price-change-magento/ but didn't work – Souf Mar 25 '14 at 15:28
  • Do you have knowledge event observer in magento so you can easily understand it. It you have still issue email me I am happy to resolve it. – Kandarp B Patel Mar 26 '14 at 08:11
  • no i know how observers work but u can see this 2nd question http://stackoverflow.com/questions/22638328/magento-add-product-to-cart-with-custom-price-using-observer – Souf Mar 26 '14 at 09:15
1

As a starting point you can start at: 

class Mage_Checkout_CartController extends Mage_Core_Controller_Front_Action
{

 /**
 * Add product to shopping cart action
 *
 * @return Mage_Core_Controller_Varien_Action
 * @throws Exception
 */
public function addAction()
{

Make sure you overwrite the add to cart route to point to yours (the new one that overwrites the Core route described above).

Also getting the price from a user's input will affect the checkout process as well, specifically the quote and everything that results from it (the cart, the order and so on).

Also, regarding onepage checkout be careful as the BE logic and the opcheckout.js are very tight together.

Chears

Radu
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